65260
domain: N
Appears in sequences
- a(n) is the starting position of the first occurrence of a string of n 2's in the decimal expansion of Pi.at n=4A050281
- Consider 3 X 3 X 3 Rubik cube, but only allow the <U, R> group to act; sequence gives number of positions that are exactly n moves from the start.at n=12A080628
- Starting positions of strings of four 2's in the decimal expansion of Pi.at n=7A083607
- Starting positions of strings of five 2's in the decimal expansion of Pi.at n=0A083608
- Index of first occurrence of exactly n consecutive twos in a row in the decimal expansion of Pi.at n=4A096756
- Triangle read by rows: T(n, k) = (2^(n-k) + 2^k)*A008292(n+1, k+1).at n=37A154693
- Triangle read by rows: T(n, k) = (2^(n-k) + 2^k)*A008292(n+1, k+1).at n=43A154693
- a(n)/2^n is the expected value of the maximum of the number of heads and the number of tails when n fair coins are tossed.at n=13A230137