74670

Appears in sequences

• a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers.at n=18A024196
• Integers k such that 10^k + 31 is prime.at n=16A107083
• Number of partitions of n into two sorts of parts having exactly 7 parts of the second sort.at n=10A258477
• Number of quadrilaterals in the graph formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares).at n=28A332607
• Numbers k that divide the sum of the digits of 3^k * k!.at n=21A348555