76147domain: NPropertiesPrimalityPrimeyesAppears in sequencesCentered heptagonal prime numbers.at n=34A144974Coefficients in the power series expansion of 1/Sum_{n=-oo..+oo} n * x^(2*n+1) * (1 - x^n)^(n+1).at n=24A357401Prime numbersat n=7496