Abundant Numbers
3,015th2,737th3,256th2,732nd1,849th2,230th2,472nd1,180th2,205th
Abundant Numbers (Long)
1,569th1,588th1,755th1,209th1,400th960th633rd847th755th
Collatz
1,975th2,078th2,438th1,762nd1,961st1,086th551st573rd691st
Diamonds
Divisors
3,673rd4,227th3,943rd3,038th2,915th1,952nd1,424th2,562nd3,220th
Evil Numbers
1,516th1,275th3,545th3,060th627th719th789th41st1,097th
Evil Numbers (Long)
719th949th1,825th1,414th1,315th585th914th103rd482nd
Farey Sequence
662nd
Fibonacci
6,393rd
Fizz Buzz
6,602nd6,781st8,261st6,324th4,852nd2,767th4,125th4,143rd3,720th
Gijswijt’s Sequence
405th428th540th406th423rd286th242nd213th326th
Happy Numbers
2,073rd
Happy Numbers (Long)
1,076th1,042nd1,316th1,029th1,013th835th666th562nd317th
Leap Years
2,392nd2,427th3,534th880th972nd1,755th702nd1,215th667th
Niven Numbers
2,332nd1,750th2,985th1,907th1,933rd1,416th477th1,276th804th
Niven Numbers (Long)
1,494th1,451st1,675th1,596th1,560th1,021st467th946th473rd
Odious Numbers
1,325th963rd2,957th2,521st
Odious Numbers (Long)
524th648th1,631st1,314th1,178th490th653rd37th437th
Pascal’s Triangle
1,792nd1,759th1,735th1,419th1,409th486th787th1,131st1,102nd
Pernicious Numbers
Pernicious Numbers (Long)
641st547th884th882nd925th852nd255th251st711th
Prime Numbers
3,607th3,255th4,372nd3,359th2,330th3,101st1,848th1,885th2,633rd
Prime Numbers (Long)
1,633rd1,224th2,013th1,246th1,548th984th608th938th1,022nd
Sierpiński Triangle
364th626th580th313th355th589th242nd265th381st