Denominator of (1+sigma(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)^2 = A003961(n^2)).

A337339

Denominator of (1+sigma(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)^2 = A003961(n^2)).

Terms

    a(0) =1a(1) =5a(2) =13a(3) =41a(4) =25a(5) =113a(6) =61a(7) =365a(8) =313a(9) =221a(10) =85a(11) =1013a(12) =145a(13) =109a(14) =613a(15) =3281a(16) =181a(17) =2813a(18) =265a(19) =1985a(20) =1513a(21) =761a(22) =421a(23) =9113a(24) =1201a(25) =1301a(26) =7813a(27) =377a(28) =481a(29) =5513

External references