A248374 The integer partition a(n) (compare A194602) has only the non-one addends n+1 and 2.

3, 5, 8, 12, 18, 25, 36, 49, 67, 90, 121, 158, 209, 271, 351, 450, 577, 731, 928, 1166, 1464, 1827, 2277, 2818, 3487, 4291, 5272, 6450, 7880

Offset

1,1

Comments

This sequence looks similar to A039899 = ..., 3, 5, 8, 12, 18, 25, 36, 49, 68, 91, ... . The differences of the corresponding values after 49 are 1, 1, 2, 4, 5, 7, 11, 14, 19, 26, 33, 43, 57, 70, 89, 113, 140, 172, 215, 261, 320, ... .

Links

Table of n, a(n) for n=1..29.

Tilman Piesk, Table for A194602 (and the corresponding PHP array)

Example

a(7) = 36. The integer partition 36 is 8+2, as seen in the linked table (and PHP array).

Crossrefs

Cf. A194602, A039899.

Sequence in context: A098202 A164653 A001973 * A020745 A232896 A227635

Adjacent sequences: A248371 A248372 A248373 * A248375 A248376 A248377

Keyword

nonn

Author

Tilman Piesk, Nov 10 2014

Status

approved