A144290 (0=0, 1=1, 2=2, 3=3, 4=2^2, 5=5, 6=2*3, 7=7, 8=2^3, 9=3^2, 10=2*5, 11=11, 12=2^2*3, ..) becomes (0*0+1, 1*2+2, 3*3+4, 2*2+5, 5*6+2, 3*7+7, 8*2+3, 9*3+2, 10*2+5, 11*11+12, 2*2+3, ..).

1, 4, 13, 9, 32, 28, 19, 29, 25, 133, 7, 183, 29, 31, 25, 308, 25, 382, 31, 43, 45, 554, 34, 36, 53, 37, 11, 871, 11, 993, 43, 67, 69, 71, 7, 111, 95, 130, 83, 246, 87, 344, 90, 498, 56, 93, 2258, 61, 64, 12, 170, 106, 742, 111, 170, 618, 78, 115, 117, 3542, 11, 3783

Offset

1,2

Links

Table of n, a(n) for n=1..62.

Example

13*13+14=183=a(12).
2*7+15=29=a(13).
3*5+16=31=a(14).
2*4+17=25=a(15).
17*18+2=308=a(16).
3*2+19=25=a(17).
19*20+2=382=a(18).
2*5+21=31=a(19),
etc.

Crossrefs

Cf. A002808.

Sequence in context: A095324 A264341 A356799 * A360390 A101181 A160249

Adjacent sequences: A144287 A144288 A144289 * A144291 A144292 A144293

Keyword

nonn

Author

Juri-Stepan Gerasimov, Dec 01 2008

Extensions

Corrected (39 replaced by 43, 75 by 95, 71 by 130) by R. J. Mathar, May 01 2010

Status

approved