A211007 Surface area of the first n faces of the structure mentioned in A211006.

1, 6, 10, 15, 21, 28, 55, 66, 78, 91, 136, 153, 171, 190, 253, 276, 406, 435, 465, 496, 666, 703, 820, 861, 903, 946, 1081, 1128, 1378, 1431, 1711, 1770, 1830, 1891, 2211, 2278, 2485, 2556, 2628, 2701, 3081, 3160, 3403, 3486, 3916, 4005, 4656, 4753, 5050

Offset: 1

Author

Omar E. Pol, Aug 12 2012

Keywords

• nonn

Comments

All members of this sequence are triangular numbers A000217.

It appears that this is the same as A147846 without 3.

Crossrefs

Partial sums of A211006.

Cf. A000040, A018252, A000217, A147876, A211005.