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A092861 "Product" of the sequence of primes and the "evil" numbers (A001969). 6
4, 7, 9, 12, 14, 15, 18, 19, 21, 25, 26, 33, 35, 36, 37, 40, 41, 42, 44, 47, 48, 50, 54, 55, 58, 59, 60, 64, 65, 66, 69, 72, 77, 78, 79, 80, 84, 86, 87, 88, 89, 90, 91, 97, 99, 100, 105, 106, 107, 108, 110, 111, 112, 114, 115, 116, 117, 118, 120, 122, 123, 125, 127, 128 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
If two monotonic sequences are mapped into the real section of (0,1), as it is defined in A051006 and the product of the two reals mapped back into the set of monotonic sequences as defined in A092855, then we have the "product" of the two sequences.
LINKS
PROG
(PARI) {prod(a, b)= /*Returns the "product" of monotonic sequences a and b */ return(mtinv(mt(a)*mt(b))) /* the functions mt(a) and mtinv(r) are defined in A051006 and A092855, respectively */ }
CROSSREFS
Sequence in context: A362185 A085922 A048973 * A248561 A360925 A007072
KEYWORD
easy,nonn
AUTHOR
Ferenc Adorjan (fadorjan(AT)freemail.hu)
STATUS
approved

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Last modified May 26 08:09 EDT 2024. Contains 372807 sequences. (Running on oeis4.)