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 A167580 A triangle related to the a(n) formulas of the rows of the ED3 array A167572. 10
 1, 6, -1, 20, 0, 3, 56, 28, 98, -15, 144, 192, 1080, -48, 105, 352, 880, 7568, 2024, 6534, -945, 832, 3328, 40976, 31616, 132444, -8112, 10395, 1920, 11200, 187488, 274480, 1593960, 286900, 972162, -135135, 4352, 34816, 761600, 1784320, 13962848 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The a(n) formulas given below correspond to the first ten rows of the ED3 array A167572. The recurrence relations of the a(n) formulas for the left hand triangle columns, see the cross-references below, lead to the sequences A013609, A003148, A081277 and A079628. LINKS EXAMPLE Row 1: a(n) = 1. Row 2: a(n) = 6*n - 1. Row 3: a(n) = 20*n^2 + 0*n + 3. Row 4: a(n) = 56*n^3 + 28*n^2 + 98*n - 15. Row 5: a(n) = 144*n^4 + 192*n^3 + 1080*n^2 - 48*n + 105. Row 6: a(n) = 352*n^5 + 880*n^4 + 7568*n^3 + 2024*n^2 + 6534*n - 945. Row 7: a(n) = 832*n^6 + 3328*n^5 + 40976*n^4 + 31616*n^3 + 132444*n^2 - 8112*n + 10395. Row 8: a(n) = 1920*n^7 + 11200*n^6 + 187488*n^5 + 274480*n^4 + 1593960*n^3 + 286900*n^2 + 972162*n - 135135. Row 9: a(n) = 4352*n^8 + 34816*n^7 + 761600*n^6 + 1784320*n^5 + 13962848*n^4 + 7874944*n^3 + 29641200*n^2 - 2080800*n + 2027025. Row 10: a(n) = 9728*n^9 + 102144*n^8 + 2830848*n^7 + 9645312*n^6 + 98382912*n^5 + 106720416*n^4 + 522283552*n^3 + 69265488*n^2 + 255468870*n - 34459425. CROSSREFS A167572 is the ED3 array. A000012, A016969, A167573, A167574 and A167575 equal the first five rows of the ED3 array. A014480, A167581, A167582, A168305 and A168306 equal the first five left hand triangle columns. A001147 equals the first right hand triangle column. A167576 equals the row sums. Cf. A013609, A003148, A079628 and A081277. Sequence in context: A019430 A064083 A152249 * A080213 A200091 A180733 Adjacent sequences:  A167577 A167578 A167579 * A167581 A167582 A167583 KEYWORD sign,tabl AUTHOR Johannes W. Meijer, Nov 10 2009 EXTENSIONS Comment and links added by Johannes W. Meijer, Nov 23 2009 STATUS approved

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Last modified February 23 02:29 EST 2019. Contains 320411 sequences. (Running on oeis4.)