23175

Appears in sequences

• Numbers whose base-5 representation contains exactly three 0's and three 2's.at n=28A045187
• Numbers k such that 2^k mod k = 2^k mod k^2.at n=35A068535
• Numbers k that are not powers of 2 such that 2^k mod k = 2^k mod k^2; or A068535 with powers of 2 excluded.at n=20A125773
• Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=9A240155
• Starts of runs of 3 consecutive positive negaFibonacci-Niven numbers (A331085).at n=43A331087