2470629

Appears in sequences

• Triangle of coefficients in expansion of (3+7x)^n.at n=34A013624
• n is equal to the number of 4s in all numbers <= n written in base 7.at n=8A014888
• n is equal to the number of 5s in all numbers <= n written in base 7.at n=20A014889
• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*3^j.at n=29A038269
• a(n) = 3*7^n.at n=7A169634
• T(n,k) = number of n X k 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.at n=37A222444
• Numbers n such that the n-th cyclotomic polynomial has a root mod 7.at n=30A245479
• Square array A(n, k) read by antidiagonals downwards: multiplicative order of 2 modulo prime(n)^k, where k runs over the positive integers.at n=47A282902
• Irregular triangle read by rows, arising from Garvan's proof of Watson's generalization of Ramanujan's partition congruences for powers of 7.at n=10A330329
• a(n) is the position of the first occurrence of n in A323077.at n=26A334198
• Triangle read by rows. T(n, k) = n^k * |Stirling1(n, k)|.at n=34A355007