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A112417 Sequence is generated as in A048985, but primes are instead written in decreasing order before being concatenated. 1
1, 2, 3, 10, 5, 14, 7, 42, 15, 22, 11, 58, 13, 30, 23, 170, 17, 62, 19, 90, 31, 46, 23, 234, 45, 54, 63, 122, 29, 94, 31, 682, 47, 70, 61, 250, 37, 78, 55, 362, 41, 126, 43, 186, 95, 94, 47, 938, 63, 182, 71, 218, 53, 254, 93, 490, 79, 118, 59, 378, 61, 126, 127, 2730 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Diana Mecum, Table of n, a(n) for n = 1..847

EXAMPLE

12 = 3 * 2^2, with prime divisors written in descending order.

So we have 3 = 11 binary, 2 = 10 binary, 2 = 10 binary, which is (after concatenation) 111010. So a(12) is 111010 = 58 when converted from binary to decimal.

CROSSREFS

Cf. A004676, A048985.

Sequence in context: A216937 A230625 A048985 * A139693 A182076 A266552

Adjacent sequences:  A112414 A112415 A112416 * A112418 A112419 A112420

KEYWORD

base,nonn

AUTHOR

Leroy Quet, Dec 09 2005

EXTENSIONS

More terms from Diana L. Mecum, Jul 14 2007

STATUS

approved

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Last modified November 22 15:27 EST 2017. Contains 295089 sequences.