209760

Appears in sequences

• Antidiagonal sums of the convolution array A213773.at n=22A213818
• a(n) = trinomial(2*n, 4) = (1/6)*n*(2*n - 1)*(2*n^2 + 7*n - 3).at n=23A302710
• Numbers k for which A276086(k) == 1 (mod k), where A276086 is the primorial base exp-function.at n=25A358231
• Square array A(n, k) = A064987(A246278(n, k)), read by falling antidiagonals; A064987(n) = n*sigma(n), applied to the prime shift array.at n=52A379499
• Square array A(n, k) = A249670(A246278(n, k)), read by falling antidiagonals; A249670(n) = A017665(n)*A017666(n), applied to the prime shift array.at n=52A379500