99500
domain: N
Appears in sequences
- Truncated tetrahedral numbers: a(n) = (1/6)*(n+1)*(23*n^2 + 19*n + 6).at n=29A005906
- a(n) = a(n-1) + a(n-2) + 1 for n>1, a(0)=0, a(1)=4.at n=22A022309
- Numbers k such that k and k^2 use only the digits 0, 2, 5, 6 and 9.at n=48A136914
- Numbers k such that k and k^2 use only the digits 0, 2, 5, 7 and 9.at n=56A136917
- Numbers k such that k and k^2 use only the digits 0, 2, 5, 8 and 9.at n=31A136919
- Numbers k such that k and k^2 use only the digits 0, 2, 5 and 9.at n=23A136920