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 A225252 T(n,k) = number of distinct values of the sum of n products of two 0..k integers. 6
 2, 4, 3, 7, 8, 4, 10, 16, 12, 5, 15, 27, 25, 16, 6, 19, 42, 43, 34, 20, 7, 26, 59, 67, 59, 43, 24, 8, 31, 81, 95, 92, 75, 52, 28, 9, 37, 105, 130, 131, 117, 91, 61, 32, 10, 43, 134, 169, 179, 167, 142, 107, 70, 36, 11, 54, 167, 215, 233, 228, 203, 167, 123, 79, 40, 12, 60, 203, 267 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..1325 FORMULA Empirical: column k is n*k^2 - A225255(k) for large n (n>2 suffices through k=1000). EXAMPLE Table starts: ..2..4..7..10..15..19..26..31..37..43...54...60...73...81...90...98..115..124 ..3..8.16..27..42..59..81.105.134.167..203..241..285..331..381..436..495..556 ..4.12.25..43..67..95.130.169.215.267..324..385..454..527..606..692..784..880 ..5.16.34..59..92.131.179.233.296.367..445..529..623..723..831..948.1073.1204 ..6.20.43..75.117.167.228.297.377.467..566..673..792..919.1056.1204.1362.1528 ..7.24.52..91.142.203.277.361.458.567..687..817..961.1115.1281.1460.1651.1852 ..8.28.61.107.167.239.326.425.539.667..808..961.1130.1311.1506.1716.1940.2176 ..9.32.70.123.192.275.375.489.620.767..929.1105.1299.1507.1731.1972.2229.2500 .10.36.79.139.217.311.424.553.701.867.1050.1249.1468.1703.1956.2228.2518.2824 .11.40.88.155.242.347.473.617.782.967.1171.1393.1637.1899.2181.2484.2807.3148 CROSSREFS Row 1 is A027384. Cf. A225255. Sequence in context: A260432 A021808 A365215 * A235201 A292958 A235493 Adjacent sequences: A225249 A225250 A225251 * A225253 A225254 A225255 KEYWORD nonn,tabl AUTHOR R. H. Hardin, May 04 2013 STATUS approved

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Last modified July 21 06:08 EDT 2024. Contains 374463 sequences. (Running on oeis4.)