163306
domain: N
Appears in sequences
- Numbers k such that k | 10^k + 10.at n=28A015902
- Triangular numbers with every digit a triangular number.at n=19A062100
- Triangular numbers whose sum of squared digits is also triangular.at n=34A094890
- G.f.: Sum_{n>=0} binomial(4*(n+1), n)/(n+1) * x^n / (1+x)^(n+1).at n=7A317133
- Triangular numbers T(i) that can be expressed as the sum of 2 positive triangular numbers, T(j)+T(k), and for which i+j+k is a triangular number, where T is A000217.at n=10A343426