A189829 Record values of d(n-1) + d(n+1), where d(k) is the number of divisors of k.

3, 5, 7, 8, 10, 11, 12, 14, 16, 20, 22, 24, 26, 28, 32, 34, 36, 38, 44, 46, 48, 52, 56, 58, 60, 68, 72, 76, 78, 80, 84, 88, 92, 96, 98, 100, 104, 106, 108, 116, 124, 128, 136, 148, 156, 160, 168, 172, 174, 176, 184, 196, 200, 208, 224, 236, 248, 260, 268

Offset: 1

Author

T. D. Noe, Apr 28 2011

Keywords

• nonn

Comments

The n are in A189828.

Links

• Donovan Johnson, Table of n, a(n) for n = 1..135

Crossrefs

Cf. A189827, A189828.