42645

Appears in sequences

• Powers of fifth root of 23 rounded down.at n=17A018180
• Number of binary strings of length n with no substrings equal to 0001 or 0110.at n=19A164396
• The sum of the numbers that are inside the contour of an n-story Christmas tree drawn at the top of the numerical pyramid containing the positive integers in natural order.at n=9A358994