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Search: id:A049207
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| A049207 |
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Array T(m,n) of products of pronic numbers m(m+1) * n(n+1) read by antidiagonals ("bipronics"). |
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+0
3
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| 0, 0, 0, 0, 4, 0, 0, 12, 12, 0, 0, 24, 36, 24, 0, 0, 40, 72, 72, 40, 0, 0, 60, 120, 144, 120, 60, 0, 0, 84, 180, 240, 240, 180, 84, 0, 0, 112, 252, 360, 400, 360, 252, 112, 0, 0, 144, 336, 504, 600, 600, 504, 336, 144, 0, 0, 180, 432, 672, 840, 900, 840, 672, 432, 180, 0, 0
(list; table; graph; listen)
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OFFSET
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0,5
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EXAMPLE
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Array begins
0 0 0 0 0 0 ...
0 4 12 24 40 ...
0 12 36 72 120 ...
0 24 72 144 240 ...
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MAPLE
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T := (m, n)->m*(m+1)*n*(n+1): seq(seq(T(q-p, p), p=0..q), q=0..12);
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CROSSREFS
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Cf. A002378, A072389, A053990.
Sequence in context: A127774 A127319 A035539 this_sequence A092219 A069026 A133851
Adjacent sequences: A049204 A049205 A049206 this_sequence A049208 A049209 A049210
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KEYWORD
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nonn,tabl,easy
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AUTHOR
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Stuart M. Ellerstein (ellerstein(AT)aol.com), Jul 20 2002
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EXTENSIONS
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Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Mar 04 2004
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