A172260 a(n) = A172240(n) + A172240(n+1).

10, 20, 30, 36, 48, 60, 68, 78, 84, 96, 114, 128, 138, 144, 152, 162, 172, 186, 198, 204, 212, 222, 240, 258, 268, 276, 288, 300, 308, 320, 336, 354, 372, 384, 390, 396

Offset: 1

Author

Giovanni Teofilatto, Nov 20 2010

Keywords

• nonn
• easy

Comments

For a(n) > 10, a(n) is divisible by 6 except if A172240(n+1) - A172240(n) is equal to 6.

Crossrefs

Cf. A172240.